2,4-Diamino-5-(phenylthio)-5H-chromeno [2,3-b] pyridine-3-carbonitriles as green and effective corrosion inhibitors: gravimetric, electrochemical, surface morphology and theoretical studies

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 53933-53948 ◽  
Author(s):  
Chandrabhan Verma ◽  
Lukman O. Olasunkanmi ◽  
I. B. Obot ◽  
Eno E. Ebenso ◽  
M. A. Quraishi
Keyword(s):  
Weight Loss ◽  
Surface Morphology ◽  
Corrosion Inhibitors ◽  
Electrochemical Techniques ◽  
Steel Corrosion ◽  
Theoretical Studies ◽  
Theoretical Methods ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

The inhibition of mild steel corrosion in 1 M HCl by three newly synthesized 2,4-diamino-5-(phenylthio)-5H-chromeno[2,3-b]pyridine-3-carbonitriles was studied using the weight loss method, electrochemical techniques, surface morphology studies and theoretical methods.

scholarly journals The inhibition of mild steel corrosion in 0.5 M H2SO4 solution by radish leaf extract

RSC Advances ◽  
2019 ◽  
Vol 9 (70) ◽  
pp. 40997-41009 ◽  
Author(s):  
Dongyi Li ◽  
Panpan Zhang ◽  
Xinyu Guo ◽  
Xiaowei Zhao ◽  
Ying Xu
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Electrochemical Method ◽  
Leaf Extract ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
H2so4 Solution ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

The inhibitory effect of radish leaf extract (RLE) on mild steel corrosion in 0.5 M H2SO4 was studied by the weight loss method and the electrochemical method.

scholarly journals Bis-Schiff bases of 2,2′-dibromobenzidine as efficient corrosion inhibitors for mild steel in acidic medium

RSC Advances ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 4499-4511 ◽  
Author(s):  
Ifzan Arshad ◽  
Aamer Saeed ◽  
Pervaiz Ali Channar ◽  
Syeda Aaliya Shehzadi ◽  
Muhammad Naeem Ahmed ◽  
...  
Keyword(s):  
Mild Steel ◽  
Schiff Bases ◽  
Acidic Medium ◽  
Electrochemical Method ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

The inhibitory effect of three new bis-Schiff bases on mild steel corrosion in 0.5 M HCl was studied by the weight loss method and the electrochemical method.

5-Arylpyrimido-[4,5-b]quinoline-diones as new and sustainable corrosion inhibitors for mild steel in 1 M HCl: a combined experimental and theoretical approach

RSC Advances ◽  
2016 ◽  
Vol 6 (19) ◽  
pp. 15639-15654 ◽  
Author(s):  
Chandrabhan Verma ◽  
L. O. Olasunkanmi ◽  
I. B. Obot ◽  
Eno E. Ebenso ◽  
M. A. Quraishi
Keyword(s):  
Molecular Dynamics ◽  
Weight Loss ◽  
Molecular Dynamics Simulation ◽  
Mild Steel ◽  
Quantum Chemical ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Dynamics Simulation ◽  
Simulation Methods ◽  
Mild Steel Corrosion

The inhibition of mild steel corrosion in 1 M HCl by four 5-arylpyrimido-[4,5-b]-quinoline-diones has been investigated using weight loss, electrochemical, surface, and quantum chemical calculations and molecular dynamics simulation methods.

scholarly journals Synergistic effect of ZnO nanoparticles with organic compound as corrosion inhibition

2020 ◽  
Author(s):  
Buraq T Sh AL-Mosawi ◽  
Mohammed M Sabri ◽  
Muhanad A Ahmed
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Corrosion Process ◽  
Zno Nps ◽  
Weight Loss Method ◽  
Steel Surfaces ◽  
Loss Method ◽  
Isatin Derivative

Abstract In chemical manufactures, the corrosion inhibitors were added in order to reduce the corrosion of mild steel. Chemical molecules are often used on mild steel surfaces as portion of the latest finishing steps before painting and/or storage. Here, this work elucidated the utilization of an isatin derivative, namely, 3-((3-acetylphenyl)imino)indolin-2-one synergistic with zinc oxide nanoparticles for improving the impedance of mild steel (MS) against corrosion in 1.0 M hydrochloric acid using the weight loss method and scanning electron microscopy (SEM). Weight loss measurements demonstrated that the best 3-((3-acetylphenyl)imino)indolin-2-one concentration was 0.5 mM and the inhibition efficiency was 83% whereas the inhibition efficiency was 92% with addition of ZnO NPs. 3-((3-Acetylphenyl)imino)indolin-2-one retards the corrosion process at 300 K and demonstrates low inhibition efficiencies at 310, 320 and 330 K.

Study on Optimal Ratio of Compound Corrosion Inhibitors for Reinforcing Steel

2014 ◽  
Vol 507 ◽  
pp. 245-248
Author(s):  
Yi Jiang ◽  
Chao Yi Zheng ◽  
Jun Zhe Liu
Keyword(s):  
Weight Loss ◽  
Sodium Nitrite ◽  
Corrosion Inhibitors ◽  
Pore Solution ◽  
Protective Film ◽  
Obvious Effect ◽  
Optimal Ratio ◽  
Coordination Effect ◽  
Weight Loss Method ◽  
Loss Method

In this paper, the anticorrosive effects of two types of corrosion inhibitors (anodic inhibitors and cathodic inhibitors) on rebars immersed in the simulated concrete pore solution with 3.5%( wt) NaCl were studied by the static weight loss method . The results are as following: firstly, all of the inhibitors had an anticorrosive effect on the rebars and sodium nitrite performed best. Besides, the higher the concentration, the more obvious effect .Secondly, diethanolamine had the best performance in the cathodic inhibitors. Thirdly, sodium nitrite had a good coordination effect with diethanolamine instead of being used alone. In this way, it can exist synergy and reduce the activity of cathode and anode by the formation of consecutively protective film on the surface of the rebars.

Study of N-1L Corrosion of Carbon Steel in Acidic Desulfurizer Performance

2014 ◽  
Vol 670-671 ◽  
pp. 37-40 ◽  
Author(s):  
Shi Dong Wang ◽  
Qiang Wang ◽  
Jing Li ◽  
Shu Liang Zang
Keyword(s):  
Weight Loss ◽  
Ionic Liquid ◽  
Polyethylene Glycol ◽  
Carbon Steel ◽  
Steel Corrosion ◽  
Inhibition Rate ◽  
Inhibition Effect ◽  
Steel Material ◽  
Weight Loss Method ◽  
Loss Method

This paper uses a metal hung weight loss method, acidic ionic liquid desulfurizer as the media, by adding different inhibitor (Polyethylene Glycol, SDBS, Functional ionic liquids), contrast to carbon steel corrosion in the absence of inhibitor, understanding of their respective inhibition effect. In the experiment, the carbon steel material, different kinds and concentrations of the inhibitor in the medium, the corrosion rate measured by weight loss method. Contrast to the blank experiment the inhibition rate can be calculated. The experiment proved that the inhibition effect of several inhibitor at room temperature, and calculate their respective optimal concentration. The experiment also investigated the compound of several corrosion inhibition synergies, confirm the good corrosion inhibiting effect of polyethylene Glycol and SDBS complex, the inhibition rate reached 69.2%.Excellent inhibition effect of the ionic liquid corrosion inhibitor and the inhibition rate reached 88.3%, showing a clear advantage.

An Analytical Procedure for Testing the Effectiveness Of Hydrogen Sulfide Corrosion Inhibitors

CORROSION ◽  
1959 ◽  
Vol 15 (6) ◽  
pp. 37-40
Author(s):  
DONALD W. SHANNON ◽  
JAMES E. BOGGS
Keyword(s):  
Weight Loss ◽  
Hydrogen Sulfide ◽  
Corrosion Inhibitors ◽  
Analytical Procedure ◽  
Dynamic Weight ◽  
Large Numbers ◽  
Sulfide Corrosion ◽  
Weight Loss Method ◽  
Loss Method ◽  
Hydrogen Sulfide Corrosion

Abstract A new method is proposed as a standard screening test for possible hydrogen sulfide corrosion inhibitors. This is a dynamic, weight-loss method which attempts to control conditions sufficiently well that substances which offer promise of being effective inhibitors under field conditions can be selected for further study. The test is cheap and simple, so that it can be run economically by a relatively untrained technician on large numbers of materials. The method is described and the reasons for choosing the particular conditions are explained. Then illustrations of the application of the procedure to a number of types of inhibiting substances are presented. 2.3.4

scholarly journals Efektifitas Kitosan sebagai Inhibitor Korosi pada Baja Lunak dalam Air Gambut

2012 ◽  
Vol 13 (2) ◽  
pp. 118
Author(s):  
Maria Erna ◽  
Emriadi Emriadi ◽  
Admin Alif ◽  
Syukri Arief
Keyword(s):  
Mild Steel ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
Mild Steel Corrosion ◽  
Water Ph ◽  
Weight Loss Method ◽  
Ft Ir ◽  
Loss Method ◽  
Chitin And Chitosan ◽  
Inhibition Technique

This research is intended to learn inhibition efficiency of mild steel corrosion in peat water using two type ofchitosan. First chitosan is without treatment and the second one is synthesized by ionotropic gelation method andthen is characterized by Fourier transform Infrared spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM).Diameter of chitosan porous is about 500 nm which is measured based on morphological photo using SEM withinhomogeneous porous shape and porous distribution is unsmooth . Effect of chitin and chitosan on the corrosionof mild steel in peat water is studied using weight loss method. It is found that corrosion inhibition efficiencydepends on peat water pH, inhibition technique and interaction time. The results show that inhibition efficiency ofchitosan without treatment and with treatment are 88.73% and 93.32% respectively. The inhibition is assumed tooccur via physicsorption of the chitin and chitosan molecules on the metal surface. The Langmuir adsorptionisotherm is tested for their fit to the experimental data.

scholarly journals L-Proline as a Green Corrosion Inhibitor in Aqueous Solutions for Carbon Steel

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Nisreen Faraj ◽  
Kareima A. Abdelghani ◽  
A.A. Idress ◽  
Dalal. M. Ibrahim
Keyword(s):  
Weight Loss ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
Adsorption Properties ◽  
Green Corrosion Inhibitor ◽  
Chemical Technique ◽  
Weight Loss Method ◽  
Loss Method ◽  
Temkin Adsorption Isotherm

The chemical technique was used to investigate the inhibition and adsorption properties of L-proline for steel corrosion (weight loss method). As the concentration of L-proline increased, the inhibition efficiency increased, but decreased as the temperature increased, according to the findings. The inhibitor’s adsorption to the steel surface has been shown to be random, involving both electrostatic and chemisorptions. The Temkin adsorption isotherm governs the adsorption of L-proline to the steel surface. Thermodynamic parameters have been determined in some cases.

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